Jc. Sung et Jy. Liou, SUBINTERFACE CRACK IN DISSIMILAR ORTHOTROPIC MATERIALS, International journal of solids and structures, 32(19), 1995, pp. 2873-2889
A subinterface crack in dissimilar orthotropic materials is considered
. The principal axes of one of the materials (say material no. 2 which
contains the crack) are aligned along the coordinate axes while the o
ther material's principal axes (say material no. 1) can have an arbitr
ary angle gamma relative to the interface boundary. The effects of mat
erial no. 1 on the behavior of material no. 2 are completely through s
ix generalized Dundurs' constants that are functions of gamma. When ga
mma = 0 or when the material constant delta((1)) of material no. 1 is
equal to one, two of the six constants vanish and only four left have
to be considered. A peculiar phenomenon is observed for delta((1)) = 1
, i.e. when the material constant delta((1)) of material no. 1 is equa
l to one the effect of the alignments of material no. 1 on the behavio
r of material no. 2 is indifferent. Several features of the stress int
ensity factors for crack faces subjected to self-equilibrating loading
s are further investigated without resorting to solving the equations.
Some numerical results for crack faces subjected to uniform pressure
or shear loadings are also given.